I will qa your japanese UI, landing page or app store copy as a native user

Your Japanese copy is grammatically correct. It still reads like a translation, and Japanese users notice in two seconds.

I'm a native Japanese speaker based in Japan. I review your AI-translated or agency-translated UI, landing page, onboarding, paywall or app store text the way a Japanese customer reads it, and return a marked-up diff:

• Before / After for every line I'd change
• - Why (unnatural word order, wrong politeness level, "translation-ese", too pushy, too vague, text too long for the button)
• - Priority (must fix / should fix / nice to have)
• - Things I could not verify (context I didn't have)

What this is: a native acceptance check with reasons, so you can decide and ship.

What this is not: a translation from English (send me the Japanese you already have), a guarantee of conversion or rankings, or a legal/compliance review.

How I work: text or screenshots in, written report out. No calls. I use AI tools for extraction and consistency checks; I personally read and judge every line. One revision round on the original materials.

Send the Japanese text or screenshots, the English source if you have it, and who the users are. I'll confirm scope before starting.